41 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National Institute for Materials ScienceJP14 papers
- University of TsukubaJP14 papers
- Ehime UniversityJP8 papers
- Kanazawa UniversityJP4 papers
- Kyoto University of Advanced ScienceJP3 papers
- University of YamanashiJP3 papers
- Chinese Academy of SciencesCN2 papers
- Fujian Institute of Research on the Structure of MatterCN2 papers
- Massachusetts Institute of TechnologyUS2 papers
- National Institute of Advanced Industrial Science and TechnologyJP2 papers
- National Institute of Technology, Hiroshima CollegeJP2 papers
- Nihon UniversityJP2 papers
29 papers
Black hole as a multipartite entangler: multi-entropy in AdS/CFT
Takanori Anegawa, Shota Suzuki, Kotaro Tamaoka
We study multipartite entanglement in typical pure states holographically dual to pure BTZ black holes, using multi-entropy and its ``genuine'' version. In the bulk, these quantiti…
Holographic AME states in black hole interiors
Takanori Anegawa, Kotaro Tamaoka
We argue that the special extremal slice inside an AdS black hole is dual to an absolutely maximally entangled (AME) state. We demonstrate this by confirming the -independence o…
Mikami-Weinstein Type Theorem for Cosymplectic Groupoid Actions
Shuhei Yonehara
The Mikami-Weinstein theorem is a generalization of the classical Marsden-Weinstein-Meyer symplectic reduction theorem to the case of symplectic groupoid actions. In this paper, we…
Pressure-induced superconductivity in TiGeTe
Sayaka Yamamoto, Ryo Matsumoto, Shintaro Adachi +5
Layered ternary transition-metal chalcogenides have been focused as a vein of exploration for superconductors. In this study, TiGeTe single crystals were synthesized and char…
Crystal Growth and High-Pressure Effects of Bi-Based Superconducting Whiskers
Ryo Matsumoto, Sayaka Yamamoto, Yoshihiko Takano +1
Three growth methods were tested for producing high-transition temperature superconducting BiSrCaCuO whiskers, employing different ways to focus a co…
CDT open-closed surface field theory of a 3D tensor-matrix model
Hiroshi Kawabe
We construct a tensor-matrix model which describes 3-dimensional (3D) Causal Dynamical Triangulation (CDT) of open-closed surface. Though the usual splitting interaction of a surfa…
Pressure-Induced Superconductivity in Layered Transition-metal Chalcogenides (Zr,Hf)GeTe Explored by Data-driven Approach
Ryo Matsumoto, Zhufeng Hou, Shintaro Adachi +6
Layered transition-metal chalcogenides (Zr,Hf)GeTe were screened out from database of Atomwork as a candidate for pressure-induced superconductivity due to their narrow band…
Crystal Size Improvement of Bi-based Superconducting Whiskers under Stress-controlled Condition
Sayaka Yamamoto, Ryo Matsumoto, Shintaro Adachi +3
Using stress-controlled amorphous precursors, we have successfully grown large (Bi-based) high-transition tempe…
Crystal Growth of BiSrCaCuO Whiskers from Pulverized Amorphous Precursors
Ryo Matsumoto, Sayaka Yamamoto, Yoshihiko Takano +1
High-transition temperature superconducting whiskers of BiSrCaCuO were successfully grown from pulverized amorphous precursors. The obtained whiskers reve…
Direct Patterning of Boron-doped Amorphous Carbon Using Focused Ion Beam-assisted Chemical Vapor Deposition
Ryo Matsumoto, El Hadi S. Sadki, Hiromi Tanaka +4
The deposition of boron-doped amorphous carbon thin films on SiO2 substrate was achieved via a focused ion beam-assisted chemical vapor deposition of triphenyl borane (C18H15B) and…
Mask-less Patterning of Gallium-irradiated Superconducting Silicon Using Focused Ion Beam
Ryo Matsumoto, Shintaro Adachi, El Hadi S. Sadki +4
A direct patterning technique of gallium-irradiated superconducting silicon has been established by focused gallium-ion beam without any mask-based lithography process. The electri…
Pressure-induced superconductivity in layered pnictogen diselenide NdOFSbBiSe (x = 0.3 and 0.7)
Ryo Matsumoto, Yosuke Goto, Sayaka Yamamoto +12
Polycrystalline samples of layered pnictogen diselenide NdO0.8F0.2Sb1-xBixSe2 (x = 0 to 0.8) were successfully synthesized by solid-state reactions. Electrical resistivity in the s…
Data-driven Exploration of Pressure-Induced Superconductivity in AgInSe
Ryo Matsumoto, Hiroshi Hara, Zhufeng Hou +8
Candidates compounds for new thermoelectric and superconducting materials, which have narrow band gap and flat bands near band edges, were exhaustively searched by a high-throughpu…
Pressure-induced Superconductivity in Tin Sulfide
Ryo Matsumoto, Peng Song, Shintaro Adachi +8
Tin sulfide (SnS) was successfully synthesized in single crystals by a melt and slow-cooling method. The obtained sample was characterized by an X-ray diffraction, an energy disper…
Logical Reasoning for Revealing the Critical Temperature through Deep Learning of Configuration Ensemble of Statistical Systems
Ken-Ichi Aoki, Tatsuhiro Fujita, Tamao Kobayashi
Recently, there have been many works on the deep learning of statistical ensembles to determine the critical temperature of a possible phase transition. We analyze the detailed str…
Pressure-induced Insulator to Metal Transition of Mixed Valence Compound Ce(O,F)SbS
Ryo Matsumoto, Masanori Nagao, Masayuki Ochi +11
Transport properties of CeF0.15SbS and undoped CeOSbS under high pressure were investigated experimentally and theoretically. Electrical resistivity measuremen…
Data-driven Exploration of New Pressure-induced Superconductivity in PbBiTe with Two Transition Temperatures
Ryo Matsumoto, Zhufeng Hou, Masanori Nagao +10
Candidates compounds for new thermoelectric and superconducting materials, which have narrow band gap and flat bands near band edges, were exhaustively searched by the high-through…
Pressure-induced Superconductivity in Sulfur-doped SnSe Single Crystal Using Boron-doped Diamond Electrode-prefabricated Diamond Anvil Cell
Ryo Matsumoto, Hiroshi Hara, Hiromi Tanaka +8
Sulfur-doped SnSe single crystal was successfully synthesized using a melt and slow-cooling method. The chemical composition and valence state of the obtained sample were analyzed…
Superconductivity and its Enhancement under High Pressure in "F-free" Single Crystals of CeOBiS
Masashi Tanaka, Masanori Nagao, Ryo Matsumoto +6
"F-free" CeOBiS single crystals have successfully grown, thoroughly eliminating a concern about F-contamination by using a high-purity CsCl flux. The obtained crystals have a p…
Restricted Boltzmann Machines for the Long Range Ising Models
Ken-Ichi Aoki, Tamao Kobayashi
We set up Restricted Boltzmann Machines (RBM) to reproduce the Long Range Ising (LRI) models of the Ohmic type in one dimension. The RBM parameters are tuned by using the standard…
Causal dynamical triangulation of a 3D tensor model
Hiroshi Kawabe
We extend the string field theory of 2D generalized causal dynamical triangulation (GCDT) with the Ishibashi-Kawai type (IK-type) interaction formulated by the matrix model to the…
Causal dynamical triangulation for non-critical open-closed string field theory
Hiroshi Kawabe
We extend the 2 dimensional Causal Dynamical Triangulation (CDT) model from the usual model of closed string to the one of open-closed string. The matrix-vector model describing th…
Super Bloch oscillations with modulated interaction
Elena Díaz, Alberto García Mena, Kunihiko Asakura +1
We study super Bloch oscillations of ultracold atoms in a shaken lattice potential, subjected to a harmonically modulated mean-field interaction. Usually, any interaction leads to…
Stochastic Quantization Approach for Causal Dynamical Triangulation String Field Theory
Hiroshi Kawabe
We construct a 2-dimensional Causal Dynamical Triangulation (CDT) model from a matrix model which represents the loop gas model of closed string. The target-space index is reinterp…